Oulema melanopus(L.) deposit more eggs on the upper and most succulent blades of their gramineous hosts than on the blade immediately below, perhaps because the ovipositing beetles are strongly positive phototaxic and thus move upward on their host. Also, females confined with ‘Genesee’ wheat fed significantly less on those blades with the greatest oviposition. Such behavior is of value to this species, because it reduces feeding competition between adults and progeny and places the eclosing larvae near or on the most succulent blades.